Abstract
There is an increasing trend in the copper smelters to recycle electronic materials, which contain relatively high concentration of platinum group metals. Platinum group metals lost in the slag is increasing with increasing of treated scrap amount. To determine the portion of the platinum group metals chemically dissolved in the slag will be a key factor to improve the recovery of those metals. An experimental study was carried out to determine the solubility of palladium in the FeOx-SiO 2 slag equilibrated with a pure palladium and the liquid Cu-Pd alloy at 1573 K and the range of oxygen partial pressure from 10 -9 to 10 -7 . The solubility of palladium in the slag tends to increase with increasing oxygen partial pressure and content of copper in the slag. Based on the measured palladium solubility, activity coefficients of palladium oxide in the FeO x -SiO 2 slag were derived. The activity coefficients decrease with increasing copper contents in the slag. Therefore, lower copper content in the slag tend to lower precious metals dissolution in the slag.
| Original language | English |
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| Publication status | Published - 2017 Jan 1 |
| Event | 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017 - Sapporo, Hokkaido, Japan Duration: 2017 Sept 26 → 2017 Sept 29 |
Conference
| Conference | 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017 |
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| Country/Territory | Japan |
| City | Sapporo, Hokkaido |
| Period | 17/9/26 → 17/9/29 |
Keywords
- Activity coefficient
- Cu-Pd alloy
- Platinum group metals
- Slag loss
ASJC Scopus subject areas
- General Environmental Science